List of top Physics Questions

Ohm's law is applicable to

Electric fuse is used in household circuits for the purpose of

The quantity which has the unit ampere-second is

If i₁ and i₂ are the angles of incidence and emergence respectively and A is the angle of prism, then the angle of deviation is given by

The formation of the rainbow is due to the dispersion of sunlight by the

Pick the correct answer from the following two statements :
(a) In VIBGYOR, wavelength increases from violet to red.
(b) In VIBGYOR, refractive index increases from violet to red. 

Bifocal lenses used to correct the defect of vision are called

The power of a lens is 2:5 D. Its focal length is

The part of the human eye which helps the eye lens to change its focal length, is

In case of myopic defect, the image is formed

If R₁ and R2 are the radii of curvature, n is the refractive index and f is the focal length, then the lens maker's formula is given by

Which among the following pairs represents optically transparent and opaque media?

A convex lens gives a virtual image when the object is placed on the principal axis

A lens bounded by two spherical surfaces curved inwards is

If \(\frac{y}{4}\) and are the object and image distances due to a convex lens respectively, then its focal length is 

The symbol ↕ used to draw the ray diagrams indicates

The refractive index of glass with respect to air is 2. The critical angle at their interface is

If A and B are the speed of light in a medium and refractive index of that medium respectively, then

When we sit at a camp fire, objects beyond the fire are seen swaying. The principle involved in it is

A rectangular tank of depth 2 m is full of water of refractive index \(\frac{4}{3 }\) When viewed from the top, the bottom of the tank is seen at a depth of 

The physical quantity which has no units, is

If i and r are the angles of incidence and refraction respectively, then i <r means the light ray travels from

The device used to measure the specific heat of a substance is

The heat energy supplied to a system during melting is known as

Formation of dew on the surface of a cold soft drink bottle kept in air is due to